Zonneschijn — 2026
| Month | Sliedrecht | Hardinxveld-Giessendam | Difference |
|---|---|---|---|
| Jan | – | 115.7 uren | – |
| Feb | – | 125.6 uren | – |
| Mar | 12.9 uren | 270.1 uren | -257.2 |
| Apr | 28.8 uren | 28.6 uren | +0.2 |
| May | 418.8 uren | 418.8 uren | +0.0 |
| Jun | 418.5 uren | 418.5 uren | +0.0 |
| Jul | 438.1 uren | 438.1 uren | +0.0 |
| Aug |
| 389.4 uren |
| 389.4 uren |
| +0.0 |
| Sep | 94.9 uren | 96 uren | -1.1 |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |